Write an exponential function y = abx for a graph that includes (–4, 72) and (–2, 18). f(x) = 4(0.2)x

f(x) = 0.5(4.5)x

f(x) = 4.5(0.5)x

f(x) = 2(4)x

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

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).

It says factor each expression 49x-28?