To have batting averages over 0.500,how many hits in 45 times at bat would raul and karen need

They would need 23 hits at 45 times at bat.

Step-by-step explanation:

Let x be the number of hits.

We can set up the following inequality:  

Now, multiplying both sides by 45 we get the solution:  

To have individual batting averages over 0.500, Raul and Karen would each need 23 hits for every 45 times at bat.

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40