Mark uses an app that shows him how many kilometers he has run to prepare for a marathon. the app said he ran 9.654 kilometers. he wants to post online how many miles he ran. mark ran miles. (1 mile = 1.609 kilometers)

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.