The ideal length of a particular metal rod is 20.5 cm. the measured length may vary from the ideal length by at most 0.045 cm. what is the range of acceptable lengths for the rod?
a) 20.455 ≥ x ≥ 20.545
b) 20.455 ≤ x ≤ 20.545
c) x ≤ 20.455 or x ≥ 20.545
d) 20.455 ≥ x ≤ 20.545

Match each inequality to the number line that represents its solution

The square root of 9x plus 7 plus the square rot of 2x equall to 7

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.