Karla is given the equation 10x + 15 = 20 to solve. she says the solution is 1/2.

which reason justifies her solution?
a) karla says that to solve the equation you first add 15 and then multiply by 10.
b) karla says that to solve the equation you first multiply by 10 and then add 15.
c) karla says that to solve the equation you first subtract 15 and then divide by 10.
d) karla says that to solve the equation you first divide by 10 and then subtract 15.

Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)

Aquadrilateral has exactly 3 congruent sides davis claims that the figure must be a rectangle why is his claim incorrect.