Ben Frank is an electrician who installs lighting fixtures. He charges (in dollars) his clients 15h+40f15h+40f15h+40f15, h, plus, 40, f where is the number of hours worked and is the number of fixtures installed.
How much does Ben Frank charge when he works 7777 hours and installs 9999 fixtures?

its electric no smoke

step-by-step explanation:

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x