For February, the cost components of a picture frame include ¥0.40 for the glass, ¥0.67 for the wooden frame, and ¥0.83 for assembly. The assembly desk and tools cost ¥570. Two hundred fifty frames are expected to be produced in the coming year. What cost function best represents these costs?
A: y = 1.90 + 570X
B: y = 570 + 1.07X
C: y = 570 + 1.90X
D: y = 1.07 + 570X
A: y = 1.90 + 570X
B: y = 570 + 1.07X
C: y = 570 + 1.90X
D: y = 1.07 + 570X
举一反三
- Inthe mixed cost equation, Y = F + VX, the X is the cost driver.
- 【判断题】螺旋线 x=cost, y=sint,z=t 在点(1,0,0)的切线为X=Y=Z
- Cans of soft drinks cost $0.30 in a certain vending machine. What is the expected value and variance of daily revenue (Y) from the machine, if X, the number of cans sold per day has E(X) = 90, and Var(X) = 40 ( ) A: E(Y ) = 27, Var(Y ) = 4.5 B: E(Y ) = 27 , Var(Y ) = 4.5 C: E(Y ) = 27 , Var(Y ) = 3.6 D: E(Y ) = 90 , Var(Y ) = 3.6
- y=sint, x=[img=11x17]17e0aa5dde55a0f.jpg[/img],则y对x的导数y'(x)=( ) 未知类型:{'options': ['cost', ' 2t', ' [img=34x34]17e0aaf40f11485.jpg[/img]', ' [img=34x33]17e0aaf41870cfe.jpg[/img]'], 'type': 102}
- 1设函数y=f(x)由参数方程x=cost,y=sint所确定,则为( ) A: tant B: -tant C: cot(t) D: -cot(t)