Answer: b.) 40
Given that:
f(x) = 5 × 2ˣ
To find f(3), simplify insert [x = 3] in the given equation:
f(3) = 5 × 2³
f(3) = 5 × 2 × 2 × 2
f(3) = 40
Answer:
b
Step-by-step explanation:
2(k-5)+3k=k+6
step 1 distribute the 2 to whats in the parenthesis
2k-10+3k=k+6
step 2 combine any like terms if there are any
5k-10=k+6
step 3 add 10 to each side
5k=k+16
step 4 subtract 1k from each side
4k=16
step 5 divide each side by 4
k=4
Answer:
2
Step-by-step explanation:
So let's call the time she needs to catch up "x", and so Terry's rate would be x-6 since he left home 6 hours earlier. Then we multiply the rates to get 20x - 120 = 80x. The answer is -2, but we can just say 2.
Checking our answer, that means if it took Sally 2 hours, it took Terry 8 hours for he left home 6 hours earlier. So 8 times 20 = 160km traveled. 2 times 80 = 160km traveled. Same distance.
