The morgan family buys 7 booklets of tickets at the carnival. each booklet has 30 tickets. of all the tickets bought, 21 tickets are for rides. how many tickets are not for rides?

Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88

When you answer this can you explain

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.