The first one is -4 and the second one is 6.
ACUTE ANGLE.
this is because the angle is less than 90 degree and greater than 0 degree
The answer is D Because in a tangent
A dot plot shows results from a range of data, giving it coordiantes so you can plot it on a graph
Let's say that the value invested in the account with a rate of 8% is "x", then the amount invested in the account with a rate of 12% is:

To calculate the total interest we need to calculate the interest of each individual account and sum them:

The total interest is the sum of the two expressions above:

The value invested in the account with 8% interest is 830, the one invested in the account with 12% interest is 1280.