Answer:
C
Step-by-step explanation:
substitute f(x) into g(x)
g(x) = f(x) + 9 = -3x - 5 + 9 = - 3x + 4
To find the y-intercept solve g(0)
g(0) = 0 + 4 = 4 ← y- intercept → (0, 4 ) → C
1.) C(t) = -0.30(t - 12)^2 + 40
for t = 12: C(12) = -0.30(12 - 12)^2 + 40 = -0.30(0)^2 + 40 = 40°C
For t = 24: C(24) = -0.30(24 - 12)^2 + 40 = -0.30(24 - 12)^2 + 40 = -0.30(12)^2 + 40 = -0.30(144) + 40 = -43.2 + 40 = -3.2°C
4.) F(t) = 9/5 C(t) + 32
for C(t) = 40°C: 9/5 (40) + 32 = 72 + 32 = 104°F
for C(t) = -3.2°C: 9/5(-3.2) + 32 = -5.76 + 32 = 26.24°F
5.) F(t) = 9/5 C(t) + 32 = 9/5 (-0.30(t - 12)^2 + 40) + 32 = -0.54(t - 12)^2 + 72 + 32 = -0.54(t - 12)^2 + 104
Amanda in increasing her time exercising each week by a constants amount which means her method is linear so the answer is a
Answer: = 96x-106
Step-by-step explanation:
Answer:
x = -1 /2= -0.5 y = 15 /10= 1.5