Hope made 333 different yo-yos. She used 1\dfrac341 4 3 1, start fraction, 3, divided by, 4, end fraction meters of string for the first yo-yo, 111 meter of string for the second yo-yo, and a total of 4\dfrac134 3 1 4, start fraction, 1, divided by, 3, end fraction meters of string. Hope uses the equation, 1\dfrac34+1+y=4\dfrac131 4 3 +1+y=4 3 1 1, start fraction, 3, divided by, 4, end fraction, plus, 1, plus, y, equals, 4, start fraction, 1, divided by, 3, end fraction to represent the situation.

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1