Question

Use exponents to write 7.5 million in expanded notation. please help

Answer 1

(7 x 10^6) + (5 x 10^5) + (0 x 10^4) + (0 x 10^3) + (0 x 10^2) + (0 x 10^1)

Answer 2

7.5 million = 7 500 000
Since you move the decimal to the left 6 times, the last exponent will be to the 6th;
7 500 000$= 7* 10^{6} +5*10^{5}+0*10^{4}+0*10^{3}+0*10^{2}+0*10^{1}+0*10^{0}$