leilaford2003
25.09.2021 •
Mathematics
Alex bought four 15 pound bags of dog food, three 4 and 1/2 pound bags of cat food, and two 1/2 pound bags of fish food. How many pounds of pet food did Alex buy? SHOW WORK PLEASE
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Ответ:
10
Step-by-step explanation:
"three times r" = 3r
"three times r minus ten" = 3r - 10
"product of 5 and the difference of three times r minus ten"
= 5 (3r - 10)
given that r = 4,
the expression becomes
5 (3r - 10)
= 5 [3(4) - 10]
= 5 [12 - 10]
= 5 (2)
= 10