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受欢迎的 Word Problems >

the product of a number and four increased by one is at least 7

解答

t h e p ro d u c t o f a n u mb er an d f o u r in cre a se d b y o n e i s a t l e a s t 7

解答

x \geq \frac{3}{2}

求解步骤

Represent the number with

x

A.T.Q.:

x \cdot 4 + 1 \geq 7

求解

x, x \cdot 4 + 1 \geq 7 : x \geq \frac{3}{2}

x \geq \frac{3}{2}

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