The solution shown for the equation is incorrect. What is the correct solution? What is the error? -4(5-1) = 12
20-4r = 12
- 4r = 32
r=-8
what is the correct value of r

The system of equations graphed below has how many solutions?

In δabc, if the length of side b is 3 centimeters and the measures of ∠b and ∠c are 45° and 60°, respectively, what is the length of side c to two decimal places?

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?