Solar photovoltaic (PV) cells are the world's fastest growing energy source. In year t since 2018, PV cells were manufactured worldwide at a rate of S = 87.55e0.17t gigawatts per year.' Estimate the total solar energy-generating capacity of the PV cells manufactured between 2019 and 2027. Round your answer to two decimal places. The total solar energy-generating capacity is i gigawatts.

The population of a city is growing 6% each year. The population was 100,000 in 2020 a) What will the population be in 2025? (b)  How long until the population triples?

Coral reefs throughout the world are dying at a continuous rate of about 1.5% per year. Write an equation that can be used to determine the future area of a reef that now has an area of 150 km^2. Let c be the area of the coral reef t years from now. The equation is:    The equation is in the      family Use the equation to determine how many years until the reef decays to an area of 99 km^2? Round to the nearest year.

A=A0e^kt 2006 population (millions) Projected 2029 population (millions) Projected growth rate  K 46.5 42.7

What is the rate of decay after 15 years? what is the rate of decay after 45 years?

In 1950 the world's population was about 2,555,982,611 with a growth rate of approximately 1.68%, what was the population in 1955? Hint: A=Pe^rt