¿Cuál es la ecuación de la circunferencia con centro (-4, -2) y radio igual a 7?

step-by-step explanation:

left be aligning the decimal points is required to not required see the number of digits to the right

just get this app called photo math it should be able to do those

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).