Answer: when he is 24 years
Step-by-step explanation: 5 x 20 =100. The doubled amount will be 5,000.
Answer:
Step-by-step explanation:
f(x) = -8x + 20
f(-1) = -8* -1 + 20 = 8+20 =28
5 - 2[f(-1)] = 5 - 2*28 = 5 - 56 = -51
4√5
2√5 + 3√5 - √5 = 4√5
add up 2 and 3 that's in front of √5 then subtract 1 from it
