A carpet store charges $20 per square yard of carpet after an initial installation fee. A customer paid a total of $800 for 30 square yards. a. Write an equation that gives the total cost of buying and installing a carpet as a function of the area of the room (in square yards).
b. Find the total cost of buying and installing 42 yards of carpet.

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.

Hurry the figure shows the front side of a metal desk in the shape of a trapezoid.what is the area of this trapezoid? 10 ft²16 ft²32 ft²61 ft²