$25 times 45 equals $1125. Twice as many students as adults so, 45x2=90 90x$12= $1080 $1125+1080=$2205
I recommend the app desmos for problems like this. the answer is 8.4
You need to use the quadratic formula for this question.

In your equation, a is 1, b is 6, and c is 4. (I couldn't find a plus minus sign, so that's what the +- means, sorry if there's confusion.)
Sub those into the quadratic formula, and

For the first answer, we should get
x1=-0.7639, when you add the √6^2-4(1)(4)
For the second answer, we get
x2=-5.2361 when we subtract the √6^2-4(1)(4)
Therefore, the x values that make this equation equal to 0 should be approximately -0.7639 and -5.2361.
The more specific answers are
x1= -3+√5 and x2=-3-√5.
144 x 17% (or .17) = 17.28
Estimate 17. 3 or 17 (I’ll let you figure it out which one )
Harris has 60-y dollars left. Hope this helps!