Mikayla believes that her score on an upcoming test can be modeled by the equation y=6.3x+60y=6.3x+60 where xx  represents the number of hours spent studying, and yy  represents Mikayla's test score.   Assuming this equation is accurate, predict Mikayla's test score if she studies for 1.5 hours.     Assuming this equation is accurate, predict Mikayla's test score if she studies for 4 hours.

Bria believes that her score on an upcoming test can be modeled by the equation y=7.4x+62y=7.4x+62 where xx  represents the number of hours spent studying, and yy  represents Bria's test score.   Assuming this equation is accurate, predict Bria's test score if she studies for 1 hour.     Assuming this equation is accurate, predict Bria's test score if she studies for 5 hours.

In 2010, the total number of overnight visits to national parks was 12.82 million visits, and it decreased by about 0.21 million visits per year until 2014.    Find an equation of a model to describe the situation.      Explain what your variables represent.     Estimate in which year there were 12.0 million visits.

A bacteria sample initially has 300 organisms. After 2 hours there are 500. Write an equation that will express the number present after t hours.

Dr. Cosentino released the information that the enrollment at Lander University grows linearly over time. The initial enrollment was 1257, and this number had grown to 1917 after 3 years.(a) Write down an equation giving the enrollment, y in terms of the number of years since the school opened, x .y =  (b) How long will it take for the enrollment to reach 4029 students? Round your answer to two decimal places.

if current trends continue, the median weekly earnings(in dollars) that a male can expect to earn is approximately by the equation y=17.4x+639, where x=0 corresponds to the year 2000. In what year will males achieve median weekly earnings of $900?

Since 2009, the number of analog theater screen has been on the decline in a country. The number of analog movie screens y each year can be estimated by the equation y = - 6000x + 24,100, where x represents the number of years since 2009. a. Find the x-intercept of this equation. b. What does this x-intercept mean? c. Use part (b) to comment on your opinion of the limitations of using equations to model real data.

Morgan's Mediterranean Restaurant has found that the number of falafel plates sold can be modeled by the equation I y = 1.4x + 8 where represents the number of years since 2010, and y represents the number of falafel plates sold, in thousands. Predict the number of falafel plates the restaurant will sell in 2031. 2851.4 Predict the number of falafel plates the restaurant will sell in 2040. 2864 □ X Submit Question X Question Help: Message instructor "X

Recently, a stock split and the value per share increased. Four days after the stock split, the stock was valued at $20 per share. Nineteen days after the stock split, the stock was valued at $65 per share. The equation 3x-y= -8 models the relationship between the stock's per share value y and the number of days x since the stock split.

The equation y=17.3x+495 qpproximates median weekly earnings for females. In what year will females achieve median weekly earnings of $900?