Need sone help with these 3 please the last obe simply dont remember the correct formula tried to do the first 2 but going in circles not finding the right calculations.?

Sandhill Company purchased and used 39000 pound of materials in production. It paid $6 per pound for these materials. If the direct materials (DM) price variance was $51090 favorable, what was the standard price per pound? $4.31$5.69$7.31$8.99 Wildhorse Company produces a hover board, which has standard requirements of two hours per board at a direct labor rate per hour of $18. In the last quarter, 2220 hover boards were produced using 4600 direct labor hours at rate of $19.00 per hour. The direct labor (DL) efficiency variance for last quarter was $1440 unfavorable. $1440 favorable. $2880 unfavorable. $2880 favorable. The formula for the direct labor (DL) price variance is (AQAP)(SQSP).(AQAP)(AQSP)(AQAP)+(AQSP).(AQSP)(SQSP)