exam Maths Puzzle Numerical Ability

Im really confused could someone please help?

Solve by factoring:

7a2+9a+2=0

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exam Other Question

Beaumont Elementary's third grad classes are having a field day. Each student must participate in 3 activities. Each class has the same number of students and a total of 64 studen how too write an equation os a line in slope-intercept form that passes through (1,-2) and whose slope is 7