Julio bought 7 science fiction novels (s) and 7 comic books (c) from the bookstore. His purchases can be represented by the expression 7(s + c). Part A: Simplify the expression by using the distributive property. Part B: The cost of a science fiction novel is $5.99 and the cost of a comic book is $6.49. Sales tax is 6%. What is the total amount that Julio spent at the bookstore? Round your answer to the nearest cent. Show your work.

See explanation

Step-by-step explanation:

A. 7(s + c)

= 7s + 7c

B. The cost of a science fiction novel is $5.99 and the cost of a comic book is $6.49. Sales tax is 6%. The total amount that Julio spent at the bookstore would be calculated as:

= 7s + 7c

= 7($5.99) + 7($6.49)

= $41.93 + $45.43

= $87.36

We then add tax which will then be:

= $87.36 + (6% × $87.36)

= $87.36 + (0.06 × $87.36)

= $87.36 + $5.24

= $92.60

yes

step-by-step explanation:

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680