Let Mia's score be

. Then, Erick scored 10 more than Mia, so his score is

. Isabelle scored 16 less than twice Mia's score, so her score is

. We can see that

is the sum of these variables, so
the expression represents the total of their scores in this scenario. Moreover, we recall that the variable in the expression,

,
represents Mia's score.To simplify this expression, we add up the variables and the numbers separately, giving us

. Therefore, in simplified form, the expression is equal to
4x - 6. The constant term
in an expression is the term not multiplied by a variable, so in this case, it is
-6.
0.05n + 0.25q = 1.60
q = 3n
0.05n + 0.25(3n) = 160
0.05n + 0.75n = 1.60...multiply by 100 to get rid of the decimals
5n + 75n = 160...answer D
To find the y-coordinate of the vertex, simply plug the value of -b / 2a into the equation for x and solve for y.
To solve for c, you divide both sides by -18. If you do that, your answer will be -1/16. So, I think you typed the question wrong. Pretty sure it's the first option.