To be able to take her dream vacation, Martina decides to save for 4 years. She opens a savings account with $800. The account pays simple interest at an
annual rate of 6%. She doesn't make any more deposits.
Answer the following questions. If necessary, refer to the list of financial formulas,
(a) How much total interest will Martina earn?
si
(b) What will the total amount in the account be (including interest)?

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

Match the scale and the actual area to the area of the corresponding scale drawing. scale: 1 inch to 4 feet actual area: 128 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 5 feet actual area: 225 square feet area of scale drawing scale and actual area scale drawing area: 3 square inches arrowright scale drawing area: 8 square inches arrowright scale drawing area: 4 square inches arrowright scale drawing area: 9 square inches arrowright

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.