The formula for the area of a trapezoid is A = zh(bi + b2), where h is the height and bị and b2 are the two bases. Rewrite the formula to solve for b1 in terms of A, h
and b2.

What is the value of 1/3x + 7x when x = 5

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?