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3 years ago

Solve.

1 answer:

4 0

$2x^2+x-1=2\ \ \ |-2\\\\2x^2+x-3=0\\\\2x^2+3x-2x-3=0\\\\x(2x+3)-1(2x+3)=0\\\\(2x+3)(x-1)=0\iff 2x+3=0\ \vee\ x-1=0\\\\2x+3=0\ \ |-3\\2x=-3\ \ \ |:2\\x=-\frac{3}{2}\\\\x-1=0\ \ \ |+1\\x=1$

Answer: C 1, -3/2

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Total cost for bowling includes the fee for shoe rental plus the fee per game. The cost for each game increases by 4. After 3gam

valina [46]

y = 4x + 2 is the equation to find total cost y to rent shoes and bowl x games

<em><u>Solution:</u></em>

Given that, The cost for each game increases by 4

The Total cost for bowling includes the fee for shoe rental plus the fee per game.

Let the total cost be "y"

Let the number of games be "x"

The point slope equation can be used to describe this situtaion

$y - y_1 = m(x - x_1)$

Here $(x_1 , y_1)$ represents the cost after 3 games is $ 14

$(x_1 , y_1) = (3, 14)$

The cost for each game increases by 4. So, here m = 4

Therefore, the equation becomes,

y - 14 = 4(x - 3)

y - 14 = 4x - 12

y = 4x - 12 + 14

y = 4x + 2

So here, 2 represents the shoe rental and "x" is the number of games

Thus the required equation to find total cost y to rent shoes and bowl x games is found

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3 years ago

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3 years ago

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3 years ago

Fred's frog jumped 7 times as far as Al's frog. The two frogs jumped a total of 56 inches. How far did Fred's frog jump?

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3 years ago

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