Estimate how many times larger 4 x 1015 is than 8 x 109 in the form of a single digit times an integer power of 10.

(4×10¹⁵)/(0.8×10¹⁰) = 5×10¹⁵⁻¹⁰ = 5×10⁵

I find it convenient to scale the numbers prior to division so the result comes out in the range I want.

the last choice

step-by-step explanation:

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i