Donnie's height increased by 15 is 40 . translate into an equation

Let's say that Donnie's height is represented by d. As the question is asking to increase Donnie's height by 15, we can get an equation of d + 15 = 40.

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When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.