Which two equations relate the measure of ∠4 to the measures of ∠1, ∠2, and/or ∠3. The measure of an angle 4 is the exterior angle of triangle it is formed by extending the base of the triangle. The triangle is with measures 1, 2, 3. The measure angle 4 is supplementary angle for measure angle 3.
A. m∠4 = m∠1 + m∠2
B. m∠4 = m∠2 + m∠3
C. m∠4 = 180° – (m∠1 + m∠2)
D. m∠4 = 180° – m∠3

d

step-by-step explanation:

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).

step-by-step explanation: