Free points and a hug for those who need them

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Me. i can't figure out this question. give an explanation too. .

Ke’ajah has a coupon for 1/3 off the regular price, t, of a tent. which expression represents the price of the tent using the coupon? select the two correct expressions. a. 1/3t b. 2/3t c. t - 1/3 d. t - 2/3 e. t - 1/3t f. t - 2/3t

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog