Botanists want to confirm the height of the world's largest redwood tree
They walk lom from the base of the
tree and meausure the
angle
of elevation
to the top. to be 85.05 degrees How tall is the
tree to the nearest metre?

On a piece of paper graph f(x)=5•(0.4)^x

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.

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.