Consider the equation x+x+x+x=50. How many different solutions does this equation have if all the variables must be positive 1 2 3' 4 integers? Enter the exact numeric answer.

Solve the formula 5x+8y=1 for y.

Pediatricians prescribe 5 milliliters (ml) of acetaminophen for every 25 pounds of a child’s weight. How many milliliters of acetaminophen will the doctor prescribe for Emilia, who weighs 60 pounds?

A bullet is fired straight up from a BB gun with initial velocity 1120 feet per second at an initial height of 8 feet. Use the formula h=16t2+v0t+8 to determine how many seconds it will take for the bullet to hit the ground. (That is, when will h=0 ?)