An adult movie ticket cost $3 more than a child’s ticket 200 adult tickets and 100 children tickets are sold the revenue is 2100 what is the cost of a children’s ticket

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Evaluate the expression for the given value of the variable 7a - 4a for a =8

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .