Andre was trying to write 7⁷/ 7⁻³ with a single exponent and wrote 7⁷/ 7⁻³ = 7⁴⁻³ = 7¹ Explain to Andre what his mistake was and what the answer should be.
none me problem careruny., Sarah earns $10 each week for weeding the garden. If she saves all of he money, how many weeks will it take her to save up $150? (Draw a picture.) (Write and solve an equation.) 1044-=15
