Question

which system of equations can be used to quarters, q, that joanne has in her purse? a $n + q = 80\\ 0.05n + 0.25q = 7.10$ b $n + q = 7.10\\ 50n + 50q = 7.10$ c $0.05n + 0.25q = 80\\ n + q = 7.10$ d $0.05n + 0.25q = 7.10\\ 50n + 50q = 7.10$ 8 the function $f(x) = -0.25x + 5$ models the height of a candle x seconds after it is lit. what is the meaning of the y - intercept of the function? a the initial height of the candle b the final height of the candle c the rate at which the candle is burning d the amount of time it will take the candle to burn 11 sally works at a store. - x represents sally’s monthly paycheck, and y represents her monthly savings. - sally will save at least $20 more than half of her paycheck each month. - she can save at most $80 more than two - thirds of her paycheck each month. - her paycheck each month is at least $1,200, but no more than $1,850. which system of inequalities represents these constraints? a $x \leq \frac{1}{2}y + 20\\ x \geq \frac{2}{3}y + 80\\ y \leq 1,200\\ y \geq 1,850$ b $y \geq \frac{1}{2}x + 20\\ y \leq \frac{2}{3}x + 80\\ x \geq 1,200\\ x \leq 1,850$ c $y \leq \frac{1}{2}x + 20\\ y \geq \frac{2}{3}x + 80\\ x \leq 1,200\\ x \geq 1,850$ d $x \geq \frac{1}{2}y + 20\\ x \leq \frac{2}{3}y + 80\\ y \geq 1,200\\ y \leq 1,850$

Explanation:

Answer:

A. the initial height of the candle
B. \( y \geq \frac{1}{2}x + 20 \), \( y \leq \frac{2}{3}x + 80 \), \( x \geq 1200 \), \( x \leq 1850 \)