On a certain day, tim invested $1,000 at 10 percent annual interest, compounded annually, and lana invested 2,000 at 5 percent annual interest, compounded annually. the total amount of interest earned by tim’s investment in the first 2 years was how much greater than the total amount of interest earned by lana’s investment in the first 2 years?
a. $5
b. $15
c. $50
d. $100
e. $105

A. $5

Step-by-step explanation:

Tim: 1000 x (1 + 0.10)² = 1210

Interest: 1210 - 1000 = 210

Lana: 2000 x (1 + 0.05)² = 2205

interest': 2205 - 2000 = 205

difference: 210 - 205 = 5

the answer will be b x² +x-1

step-by-step explanation:

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.