The hardware store had a pile of leftover boards. The lengths of the boards are displayed in the chart below. Length of Board (ft) Frequency 0.01 ft 17 0.03 ft 48 0.2 ft 82 0.3 ft 64 0.7 ft 81 If all of the boards that measure 0.03 feet each are lined up end-to-end, how long would they be altogether?​

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.

Someone answer asap for ! the boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a. e = 2b - 212 b. b = 2e - 212 c. e = -2b + 212 d. b = -2e + 212

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how