A 10 foot ladder is leaning against a wall to reach a window that is broken. If the window is 8.5 feet above the ground, then how far is the ladder from the base of the wall?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

Sally deposited money into a savings account paying 4% simple interest per year. the first year, she earned $75 in interest. how much interest will she earn during the following year?